Install FreeMind In Ubuntu Hardy
1) you need to update/install your java version follow guide here
2) sudo apt-get install freemind
FreeMind is a premier free mind-mapping software written in Java. The recent development has hopefully turned it into high productivity tool. We are proud that the operation and navigation of FreeMind is faster than that of MindManager because of one-click “fold / unfold” and “follow link” operations.